Specification Brand : JINGLING BulletPoint1 : Suitable for grinding the edges of glass, stone, ceramic, shell, jewelry or hard alloy BulletPoint2 : Diamond grinding head is an ideal tools for grinding mold, glass apparatus, jade carvings BulletPoint3 : Heads Shapes: 2mm NEEDLE SHARP/Tapered head; Shank diameter: 3mm(1/8 in); Grit:120 BulletPoint4 : Suitable for dremel, electric grinder, carving machine, machinery supporting assembly with a 1/8" collet BulletPoint5 : Product Name: Diamond Carving Burrs, Conical Grinding Bit, Cone Grinding Bit Color : Blue ExternallyAssignedProductIdentifier : 6996185837439 ExternallyAssignedProductIdentifier1 : 0094759875460 ExternallyAssignedProductIdentifier2 : 094759875460 FinishType : Silver GpsrSafetyAttestation : 1 IncludedComponents : carbide burr 1pcs ItemName : 30Pcs Diamond Grinding Bits 2mm Cone Tapered Carving Burrs Conical Rotary Points ItemPackageDimensions_Height : 0.59 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 1 ItemTypeKeyword : cutting-burrs Manufacturer : JINGLING Material : Ceramic,Diamond,Marble Material1 : Carbon Steel Material2 : Diamond ModelName : Diamond Grinding Burrs Drill Bit ModelNumber : SL-4 5pcs NumberOfItems : 30 NumberOfPieces : 1 PartNumber : HHMZ-26#-3mm PowerSourceType : hand_powered ProductDescription : JINGLING 30Pcs Diamond Coated Burrs Grinding Bit 2 mm NEEDLE SHARP Rotary Point with 1/8" Shank Grit 120 Code 26#-3mm New one box set of 30Pcs diamond coated grinding burrs / pointed heads in box set Specifications and shapes: Heads Shapes: 2mm NEEDLE SHARP/Tapered head Total length: 45mm (1 3/4" inch) Shank diameter: 3mm (close to 1/8 inch) Suitable for dremel, electric grinder, carving machine, machinery supporting assembly with a 1/8" collet Grit: 120 Grit type: medium Quantity: 30Pcs Maximum Speed: 35000 RPM Color: Silver Material: Steel, diamond Model: diamond grinidng bits 2 mm tapered head Use with water as a lubricant is better Suitable for use in grind the edge of glass, jewelry, shells, tile and stone Usage: used for mould grinding, grinding inner hole, suitable for electric grinder, carving machine, electric machinery supporting assembly, mainly used for carving glass, jade, fixed abrasive and hard objects. The electroplating diamond assorted grinding head grinding needle bar fine polishing grinding, diamond grinding head is mainly used for electric and pneumatic tools. Diamond grinding head is processes each kind of mold, hard alloy, glass apparatus, ideal correction tools such as jade carvings. Just a friendly reminder: The Shank diameter of grinding bit is 3mm (close to 1/8 inch) If your chuck of Dremel is 3mm (1/8 inch) or Universal 3-jaw chuck, then the grinding bit can be installed directly However, it is NOT suitable for machines with 3/32 inch chuck, such as Electric Nail Drill